2.01a is the emulationstation version but its a modified build for retropie.
And you are correct- both the Wii and Xbox may be configured for emulationstation to use but the hardware of the raspberry pi can’t support them (plus I don’t know of any working Xbox emulators as it is)
If you are interesting in using emulation station with more emulators that require more processing power like the n64, GameCube, Wii, etc you can get it setup on your pc. I created a video about it, I’m going to try and update it with more emulators this week or next.
I had another question along the same lines. I have a PS2 game, it hovers at 2GB. When I try to play it, it tells me something about too large of a size (on a RasPi 2). Wondering what the upward limitation is…
RPI clusters are an interesting concept. As far as my very limited understanding goes the software would have to be coded to work with such a setup- it would probably get pretty messy and require someone who knows what they are doing (which I usually don’t :p) I don’t know about 2GB limitations on games, I’ve always just played on older systems.